diff --git a/swig/comedi.i b/swig/comedi.i
index 63cd88f..b25441b 100644
--- a/swig/comedi.i
+++ b/swig/comedi.i
@@ -30,6 +30,7 @@
 *
 ***********************************************************/
 %module comedi
+#define SWIG_USE_OLD_TYPEMAPS
 %{
 #include "comedilib.h"
 %}